Gary wright



No. 624,28I. Patented May 2, I899.

C. WRIGHT.

MINING DEVICE.

(Application led May 14, 1898.)

(N0 Model.)

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NITED STATES ATENT F'FICE.

CARY WRIGHT, oE SALMON CITY, IDAI-Io, n ssiGivoR 'or THREE-EOURTHS To GEoRGE s. TERRY, oE NEwYoRK,` N. Y.

srEcEIcTI fiiting part of nettet raient ivd. 624,281, aata ivrag; 2, 1896. Applicata. Emmy 14,1898. sentira. 680,723. (mman.)

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Be it known that I, CARY WRIGHT, of Salinon City, in the county of Lemhi and Statein a tunnel and will serve to thaw the earth l to be worked and which will utilize the heat to the best advantage.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying l drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding` parts in all the figures.

Figure 1 is a vertical central section through the machine. Fig. .2 is a vertical section on the line 2 2 of Fig. 1, and Fig. 3 is a horizontal section on the line -3 3 of Fig. 1. p

A truck A is employed mounted upon suitfable wheels 1-0, and on the said truck, at the rear, standards 11 are secured in any suitable or approved manner, and at the forward end of the truck shorter standards 12 are provided. Said standards 11 and 12 support a roof 13, which roof extends beyond the forward faces of theforward standards 12, as shown in Fig. l.

Bearings 14E are secured to the forward standards 12, and in said bearings the trunnions of a heater B are mounted toI turn. This heater is preferably of cylindrical shape and comprises a body-section b and a coversection b', the cover-section being hinged .to the body, and any approved means may be employed for locking the cover-section to the body.

One or more handles 15, of any desired shape, are attached ordinarily to the coversection to facilitate the manipulation of the same and to facilitate the rotation of the cylinder. The body of the cylinder and likewise its covers are provided at the front with perforations 16, and at the rear of the cylinder other perforations 17 are made, and over and around the rear perforations 17 abox 18 is constructed. A tube 19 is made to enter the box 1S at or near its center, and the said tube is made 55 to rest upon er may be attached to a cross-bar 20, which cross-bar is adjusted by means of set-screws 21 or any equivalent devices upon the rear standards or uprights 11. The tube 19 is connected with a iiexible tube 22, which 6o is adapted to be carried up through the shaft and out at the top or out of a tunnel and connected with a blower or other means for forcing air into the heater B. The fuel that E is preferably used in the heater is wood, and 65 the air which is forced into the heater will materially assist in the combustion of the material.

The perforated surface of the heater is adapted in practice to face the bank or wall 7c of frozen earth or gravel that is to be removed, and the wall or bank is subjected to heat for a sufficient length of time to extract the frost therefrom, enabling the earth to be readily Worked. It will be observed that the heater 75 is pivoted and that the supply-tube 19 can be adjusted upward or downward, so that the rays of heat may be directed to any desired point. The forward-projecting portion of the roof 13 prevents the heat from escaping up- 8o ward and insures all of the heat being concentrated where it will do the most service.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A thawing device, comprising a movable frame, a cylindrical fuel-chamber mounted upon said frame by axial journals,said chamber having a fuel-charging door and also a series of gas-discharge openings on one side, 9o an air-supply chamber extending along one side of the fuel-chamber and connected with its interior by holes through the wall between, an air-supply pipe connected to the air-chamber and serving also as a handle to control 95 the position of the chamber, and a shield or cover supported from the frame and extending over the fuel-chamber.

2. A thawing device, comprising a frame, an approximately cylindrical fuel-chamber roo pivoted axially to the said frame and pro-y vided with gas-discharge openings, an airsupply pipe rigidly Connected With the fuelchamber and serving as a handle therefor, and a cross-bar adjustably mounted upon the frame and arranged to support said pipe.

3. A thawing device, comprising a movable frame,a fuel-chamber mounted thereon upon journals, said chamber haviuga series of gasdischarge openings on one side, an air-supply pipe connected to the fuel-chamber, and

serving as a handle to control the position of 1o the chamber, a bar supporting saidppipe and vertically adjustable upon the frame and ay shield or cover supported from the truck and extending over the fuel-chamber.

GARY VRIGHT,

Witnesses:

J. FRED. ACKER JNO. M. RITTER. 

